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Monday, December 5, 2022
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Monday, December 5, 2022
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    Green thumb tips for the indoor gardener

    Rosa Cartagena

    THE WASHINGTON POST – Houseplants do a lot to help us. They connect us to nature, they beautify our interiors, and research even shows they boost our mental health. In return, it’s only fair that we cultivate a nice home for them, too.

    “The best thing to do for any plant to make it literally go crazy in your home (with) new growth and big foliage is to mimic, replicate its natural habitat,” said author of Wild at Home: How to Style and Care for Beautiful Plants Hilton Carter.

    Of course, it’s not always easy to mimic tropical conditions in, say, a condo in Chicago, and there are many reasons your potted friends might be struggling. We asked plant-care pros how to diagnose – and solve – eight common problems.


    The most common mistake that well-meaning plant parents make is overwatering, which can cause root rot that will ultimately kill your plant.

    Root rot comes from a pathogen that thrives in a consistently moist environment; if soil is left soggy for too long, the once-dormant pathogen activates and attacks the roots.

    Signs of overwatering include yellowing or drooping leaves that fall off the stem, a pot that feels very heavy (like it’s waterlogged) and soil that starts to smell.

    If you catch it early, you can counter root rot by reducing your watering frequency and moving your plant to an area that gets more direct sunlight.

    If the planter doesn’t have a drainage hole at the bottom, consider repotting in one that does. Make sure the soil is completely dry before watering again.

    Preventing overwatering starts with abandoning the idea that you can standardise a watering schedule for all your plants, said Lily Cox, who runs a plant business.

    Instead, pay attention to the individual needs of each variety.

    Drought-tolerant snake plants and ZZ plants, for example, should dry out completely between waterings. Ferns and prayer plants, meanwhile, prefer moist soil.

    Cox recommended sticking your finger into the top two inches of dirt to gauge if it’s dry, wet or moist. If you want something more precise, you can buy a moisture meter.


    Signs of a thirsty plant include leaves that are drooping, curling or getting brown. For varieties that like damp conditions, greenhouse manager at American Plant in Bethesda, Maryland, Emily O’Gwinat suggested thinking about the soil as a sponge.

    “Just imagine how much water you’d have to pour on that size sponge to keep it moist,” she said.

    “You don’t need to water it super thoroughly every single time, necessarily. You can add a little bit of water at a time.”

    If you’ve been watering consistently only to see the same dried-out results, that could be a sign the peat in the soil has shrunk.

    This causes the water you pour in to run through the pot and out the drainage hole before it has a chance to absorb.

    If this is your problem, it’ll be “really hard to rehydrate without breaking that soil up”, O’Gwin explained.

    If your plant is in a plastic container, squeeze the sides to loosen up the dirt.

    Otherwise, use a skewer to poke holes in the soil and move it around. Then, pour water over the plant a few times.


    A fern in a terracotta pot? Bad idea. A succulent in a glazed planter? Not great, either.

    Ferns, alocasias and other water-loving plants need their soil to remain moist.

    Pots made of terracotta, ceramic and clay are very porous and will dry out the soil faster.

    Glazed, metal and plastic containers, which retain moisture, will be a better fit. Succulents and cactuses, on the other hand, work well in porous planters.


    Similarly, pay attention to the soil mixtures you use: Cactuses and other drought-tolerant varieties prefer desert conditions, so an all-purpose mix that holds water could lead to overwatering. Try a cactus-mix instead.


    If your plant’s growth seems stagnant, its leaves are wilting, and you’re having to water more frequently than usual to keep it hydrated, it might be root-bound – meaning its roots are too tightly packed and it’s time to move the plant to a larger container.

    Alternately, if the plant is staying wet for a long time, that’s a sign the pot is too big and you should downsize. Using an oversized container will prevent the soil from drying out properly between waterings, which will lead to root rot.


    When the sun is too strong, you’ll often see bleached out foliage, and in extreme cases, holes burned straight through leaves. You may even notice the plant leaning away from the window in search of shade.

    Before plopping your plant on a bright windowsill, you’ll need to evaluate the amount and intensity of light it prefers. Consider what direction the window faces.

    The type of windows you have can also make a difference. “Some of the old windows of historic homes don’t have as much UV filtration,” O’Gwin said.

    “But in modern homes, the windows are kind of like sunglasses in that they filter out a lot of the sun.”

    Filtered sun means plants that thrive in lower light might be fine sitting closer to the window.


    Echeveria and other sun-loving varieties need intense light to thrive, and they might not grow to their full potential indoors even if they sit in a low-sunlight-facing window.

    Plants that are short on rays can experience etiolation, characterised by pale leaves and skinny, tall growth.

    Weak growth is also common under these circumstances. A bird of paradise plant, for example, will grow very tall leaves only for them to bend and break.

    If your home doesn’t have a sunny-enough spot, try investing in a grow light.


    A distressed-looking plant might also be suffering from a bug infestation. Common culprits include fungus gnats, spider mites and mealybugs.

    Fungus gnats, which thrive in damp soil, are hard to miss since you’ll find yourself constantly swatting them away.

    Spider mites, which are tiny and hide beneath foliage, can be much tougher to spot; you can detect them by the presence of white webs.

    Mealybugs look like a fuzzy mass of cotton or mold that appears where the leaf meets the stem. Neem oil is a common pesticide that’s safe to use. Wipe leaves and stems with it multiple times to eradicate an infestation.

    Try sticky fly traps to catch fungus gnats, and kill their larvae by replacing the top of soil and watering with a solution that includes mosquito bits.

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